Pattern knitting-machine.



PATENTTD MAY 1, 19o@l -W.'W. BURSON..

, PATTERN KNTTTTNG'MA CHINE.

APPLICATION FILED 1350.30. 1895.

7 SHEETS-SHEET l l/.V/ FA/assis.'

- Wax/W PATTERN KNITT'ING MACHINE.

' APPLICATION PLED DE.30,.1895; l l

7 SHEETS-SHE; TTTT E lll/Uilm lllllllum l JMM No. 819,407. f PATENTEDMAY 1, 1906.

W. W. BURSON. .PATTERN KNITTING MACHINE.

APPLIGATIONTILED DBG. 30. 1895.

' 7 SHEETS-SHEET 3.

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. W. W. BURSON.

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a WW11111111111115 N0.:819,4o7. PATENTED MAY .1, 1906.

' WW. BURSON.

PATTERN KNHTING MACHINE.

APPLICATION FILED DEOKO.. 1895.

' 7 SHEETS-SHEET 5,

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l PATENTEDMAY l, 1906.-

W. W. BURSON. 'PATTERN KNITTING MACHINE.

APLIGAT'ION FILED DEGgSO, 1895.

7 SHEETS-SHEET 7.

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. -NTEDsTATES 'PATENT OFFICE;

- 1 i PATTERN KNIjIjTINC-i-MAyoHlNr-z.v

N.819,4o7. A

' Speccatonof Letters Patent.

lilium-ion med Decembe'r 30,1895. serial 113.573.769.

all it'mdy v Be ity known that I, WILLIAM Won'rn BUR- SON, of Chicago,in the county of Cook and l State of Illinois, have invented a new andImrelations of apattern-cylinder, rocking/lever,

proved Pattern Knitting-Machine, of which the following is aspeciication v My -invention is an improvementin that class ofknittingfmachines called straightrow .machines, inl which two rows ofneedles are'arrangedt'o point toward ,each other at an obtuse/angle andare arranged. to knit across,

a slotted openin ,down which the knitted article passes as t e workprogresses, the needles. ofr each row being alternated with` a set ofpresser-hooks for holding the work down and both rowsA of needles beingo erated by cams connected with slide-bars t at are arranged toreciprocate atright anglesto the length of said needles 'so as to movethe latter an cause themv tocoperate with the'yarne, carrier as itfreciprocates vacross the hooked inner. ends 4ofthe needles.v`

Infthe drawings I havefshown the invenr" tion. embodied in amachinewhich is essentially identical in its generalconstruction with thatofUnited States Letters Patent No. 616,600, granted to me December. 27,1898..V i

Figure. 1 Sheet il,

is a sectional view through the machine aforesaid, showingthe 4intooperation the needle which in Flg". I0j1 s needle-jack, andneedle-actuating nam, the latter-beingY down in osition to operateagainst the needle-jack. ug, and the needles beingprojected to theirutmost throw in'position to be'operated upon by the latch-o en ers jonthe yarn-carrier. .In this view I ave shown a portion of thepattern-cylinder at` one side of y.the machine,.together with theadjacent arts and a small portion of th parts attA e other sideof themachine. Fig,

- dle movement in. setting up` the toe ofaistock- 2, Sheet .1;,v isy avsimilar .section ofthe same parts taken in the same plane as Fig.. lvand,

showing the `needle-actuating cam/raisedfout of range of contact. withthe needle-jack lug.v Fig. 3, Sheet l, is also al similar viewin thesame plane, but showing. thene'edlefjaclede# ing.' -or the like. i Fig.43, ,Sheet 3, illustrates the position which the r'st course of yarn fedto the'needles caused to assume the nee# z Patented May 1, 1966.

dle movement of Fi 4. Fig. -5, Sheet 2, vis a diagramshowing t e return'needle movement. succeeding the needle movement of Fig. 4-in otherwords, Fig. 5 shows the latten half of the rst round in setting uptheftoe;

Fig. 5a, Sheet 3,' shows the first and second courses of set-up stitchesas produced by the'r needle'movements which are represented by Figs. 4and 5,.Sheet 2.` 'Fi .6, Sheetl2, is a'A diagram showing the nee lemovement-.in beginning the heel of a stocking or the like.

Fig. 7, Sheet 2,is a diagram showing the return heel-needle movementnext succeeding that of'Fig. 6 on the same row of needles as in Fi 6.-Fi .-8, Sheet 2, is a diagram showing a veelnee gi 7o. le movementsimilar to that in Fig. .6, but on the opposite row of needles. Fig. 9,`Sheet 2,v is a diagramshowing ,hee1

needle lmovement,likeI that in l 7., but on `the o posite row'ofneedles, as in Fi 8. Fig'.

A dle movement .of w 'ch the reversing-needle is dropped. outof actionon onev row of the:

needles. ing a heel-needle movementinwhich the reversing-needle isdroppedout of action on the diagram representing as having been broughtdropped. FigslZa'and 12b, Sheet 3, are dia* grams of portions of widenedknit fabric, 'showing the results produced in the fabric lby fthe'rowopposit'e that `inwhich vt e widening .row opposite to that inwhich the dropping. out occurs in Fig. 10. Flg. 12, Sheet 4, isa

occurs brougrhtl into /operationfsimulta'ne ously thenewwidening-needle. Figs. 13,,Sh'eety 5,i's a diagram of a portlonI of-Widened knit kfabric int e productionof which the neefdle movementillustrated in Fig'. 13 is:A utilized. Figs.\1 4 and 15, Sheet 4, aredia'v grarnsashowing other movements, of the neefv ,dles 'forwidening-Figs'. 15, Sheet is adiay" Mgram'fshowing portion of a widened ,fabrlc'1n roo the, production of which'the needle-move- Y*ments of Figs. 14 and15: are`utilized Figs.

16 to. 19"Sh'eet 6, are diagrams showing neelv .Sheet 1 5, is va dia ramshowngt 'e positionof Aments of Figs. 16 :to Figs. 2() and 21,

Sheet 6, are diagrams showing another needl'emovement used in widening.Fig. 21a, Sheet 5, is a diagram of a portion of widened fabric producedby the needle movements of Figs. 20 and 21. Figs. 22 and 23, Sheet 7,are diagrams on the orde; of developments on a plane of the main patternelements of the two pattern-cylinders, Fig. 22 showing the said atternelements of one cylinder, and Fig. 23 s owing those of the othercylinder.

Having referenceto the drawings, in Figs. 1, 2 and 3, Sheet l1, C C arethe two'needklebeds of the machine, and ais the narrow slot between theinner edges of the said needlebeds, across which slot the needleswork'a'nd down through which the article being produced passes as it isknit. E represents the needles, and F` the needle-actuatinor jacks, botharranged inthe slots-of the needle-beds and the needles being looselyconnected to the jacks, which latter have lugs b normally i projectingabove the general level of the needle-bed into position to be engagedand operated by the needle-actuating cams G Gr2 upon the lower sides ofthe cam-bars G G,

which reciprocate endwisein a. direction at right' angles to the jacksand impart the necessary reciprocating motion to the jacks and throughthe latter to the needles.l Fig. 5 shows only the jacks,needle-actuating cams, and cam-bars at one side ofthe machine. The lowerends of the need'ie-jacks rest in slotted seats in the rocking levers H,which correspond in number to the number of needles. The jacks at eachside of the machine are pivotally mounted upon a rod D', so as to becapable of a rocking or tilting movement.

Such movement` of the said levers H gives a vertical movement to theneedle-jacks, and

. accordingto the directionin which the levers H'are swung either raisestheir lugs b above the needle-beds into the range of action of theneedle-cams, as shown in Fig. 1, or depresses'.

them below the upper surfaces of the -needle- 'beds and out of suchrange of action, as

- shown in Fig. 3. This capacity for rocking movement possessed by thelevers H ro,- vides for enabling any number of needles to be thrown intoor out of action individually. The adjustment'or shift of the levers His caused automatically by two pattern-cylinders I, one on each side ofthe machine, (only one of which is shown,) the periphery of eachpattern-cylinder being wrought into elevations and depressions thatoperate upon the two feetc c of each rocking lever H to give to therespective rocking levers the necessary movement. The levers H,respectively, are bent or offset laterally, so that the feet c c of eachofthe said levers rest in different vertical parallel planes upon twoadj oiningdifferentJ peripheral sections of the correspondingpattern-cylinc le'r.l Thus each'of the said levers through theinteraction of one set of projec tions on the pattern-cylinder with onefoot,

and is moved positively inthe other direction through the interaction ofthe adjoining set of projections on the pattern-cylinder. with the otherfoot. As in my Letters Patent aforesaid, each pattern-cylinder is rr adeof a j series of rings or disks, which are cut upon their peripherieswith notches and elevations corresponding to the desiredpattern, theserin s or disks being made in pairs, one ring or isk of each pair beingthe complement of the other, and each pair of rings constituting 4thepattern for one rockin lever H and its correspondingneedle.- Int ediagrams ofthe two. pattern-cylinders which are given in *,FIilgs. 22and 23, Sheet 7 I have represented y the acting portions of the maincylinder or disk of each pair. of'pattern rings or disks,

the supplemental ring or disk of each pair which forms the complement ofthat one which is shownbeing omitted in order to simplify the drawings.j The cams attached to the under side of each cam-bar G are double cams,which are adapted to lproject and return the needles at each singlestroke of the needle-cam bars.

In knittin some kinds of work it is necessary that o y a singlenstead.of a double) actionfof the cam should :take place. Thus in knittingtubular goods the needles on one side must be advanced and retracted bytheI forward movement of the needle cam-slide, and then the needles uponthe other side advanced and retracted by the return of the 'said slide,the first set of needles remaining qlliliescent during the said returnstroke. For t 's mode of action the cams which advance or project theneedles are made movable into and'out of operative position, so as toenable them to be lifted out of positionfor engagement with the lugs ofthe needle-jacks, as in Fig. 2, at every alternatestroke. The means rooof controlling the action of the cams and lifting and lowering them isshown and described in my patent aforesaid.

P represents the resserfhookawhich hold the fabric down in t e slot a.These rise and descend with every movement of the needles and areactuated by the presser-hook-actuating cam-bars R,.the latter beingoperated in manner shown an'd described in the Letters Patent aforesaid.

IIC

The remaining features of construction' and the mode of operation of themachine are in general as set forth in my patent aforesaid.

Inasmuch as every needle in the machine is controlled by a pattern, itfollowsV that a great range of combinations of lmovements may be madefor the purpose of knitting'dif-A ferent articles. A few of the saidcombinations embodying features of the resent invention will now bedescribed. n this deseriptio'n I shall refer-to the 'diagrams Figs. 22

and 23, Sheet 7, Yshowing the main pattern'V elements of the twoattern-cylindersa As I have already stated erein, in Figs. 22 and 23 Ihave represented onlythe acting edge" portions of the main ring or diskof each pair of rings or disks yof--the'respective patterncylinders, thesupplemental or complemental ring or disk of each pair being omitted inorder to simplify the drawings. In Fi 22 the order of sequence' of thesuccessive l(lines ofieleuatiommdgpressions of the pattern is from leftto'rightfin Fig. 23 from right to left. The said linesae numberedconsecu- 'tivelyin each igurefand lthe lines which act` y in unison bearthe same numerals.

'To set u the toe'of a stocking or the like,4

correspon ing portions of both rows of needles are utilized, the` iirst"fstepA or row of indicators of each pattern-cylindenthe same beingdesignated 1 1 in Figs.' 22 and 28, re-

spectively, acting to cause the'needles of both rows to be thrownforward simultaneously to take the yarn, as indicated in Fig. 4, 'Sheet2, and the yarn being taken by all ofthe said.

. needles ingtheL inst Y'passageofy the yarn-carimovement. Ther resultin` the fabricY is shown the diagram Fig. 5*?, Sheet'S. I

regard this' manner of'setting u and closing thetoeof the stocking orthe' ike'v as better thaiisthat which usual y' is' adoplted inpraceretoforein tice. i', It has beenthe ractice-- Wst'artin, j,"th'eknitting y closing the toe to place the yarn in the first'course uponall of the needles whicharedenominated settingup needles and then toknit all the needles -on each ,side on which' there are loops beforewidening. This operation makes a thin set-up line andcauses a severestrain upon 'the yarn which is first `placed upon the nee-` dles.vBothof these drawbacks ordisadvan-y tages are relieved -by `my plan ofclosing the toe and setting up the knitting. I The toeis now ready to bevwidened by the needle movements, which will beconsidered later.

To knit the heel of a stocking or the like, -I prefer-to knit a part ofone row ofneedles', as CD to CD7 of `theCD row (see. Fig-6, Sheet 2)during the passageiof the yarn-carrier in one direction and in thereturn movement (see Fig. 7 to drop H'needle CD7 and to knit CD6, calledthe ."reversing-needle, and:y all4 ric, as distin ric, orl end o aneedle-row, thest needle 1n In the .return-passage alternate 4AB row theneedles fromAB to ABl".

the other needles to and including CD. The

vlmitting is'then crossed over to the AB row and needles` AB to'AB7 areknit, as in Fig.

8. On the return movement needle AB7, A

Fig. 9, isgomitted and needles AB to AB6 are knit. The knitting is thencrossed over to' the CD row again, and a series of needles dieriug fromthe' former one is knit, the last needle knit in the passage from leftnto right being dro ped on t e return-passage. Steps 5 to 13 o therespective pattern-cylinders, Figs. 22 and 23,- control during thesemovevments. In this procedure no twoconnected rowsl of switches orcourses are of the samer length, the return course being uniformly oneneedle shorter than the outgoing course,

and the third row of stitches on either-side t should stop, preferably,at least one needle y short of the last row knit, the fourth course,

like the second, being one needle less than the former course. Theresult ofthis prof cedu're is illustrated in Figs. l2a` and l12'?,"Sheet 3.

when the knitting Courseends in .the fabished from the ed e of thefabthe return course-for instance, the needle CD6 of Fig. 7, Sheetv 2.,and ABxof Fi 9,

When it-isnece'ssary toknit asta reversing-A needle in either row of neees, the said needle is dropped, as indicated by Fig. 10, Sheet 4, inthecase of needle CD?, and two or more stitches, preferably, are knitbeyond ita`iter which the same return movement that has alreadybeenfdescribed is made on that row. The same action is repeated on theAB row of needles when needle AB6 is dropped and knit past, Fig. -1-1,Sheet 4, and the return movement ismade as above stated. A repetition ofthese movementsinthe proper order forms a Well-shaped heel which is freefrom eyelet-v holes and which may. be knit without other appliancesthanthe regular needle move` 'ments require.

Towidenl the fabric, as in the toe, heel, and, leg of the stocking, whenthe knitting is begun at the toe, three different combinations IIO ofneedle movements, available under diern en t circumstances, are capableof being utilized either separately or conjointly, asnoW will beexplained. In Fig.,12the needles of the CD row are all meant to be-oerative from needle CD to. needle CD, an on the Fig.

-13 shows all of the needles ofthe CD row eX- et CD1.1 dropped out ofaction, and needle which is `the needley to be brought into action forthe purpose of widening, 1s actuatedin such manner that needle CDUtakesthe yarn between needles 1AB.1P=1and AB11 and'knits a stitch,whichoperation closes the eyelet-hole which otherwise'would be made bythe widening-needle.

The result in' theoutside of said needle is brought into actionWideningneedle are dropped out .of action,

thereby knitting over or past the r'stwidenwhereby the strain on theyarn in the o era.- Io

ing-needle, substantially as spec-ined. tion of Widening is reduced,substantia y as 6. The combination of tWo rows of needles, set forth. 5and needle-controlling patterns so formed WILLIAM WORTHv BURSON.

that when a needle is widened the first ad- Witnesses: A joining needleon which there is already a WM. E, HINCHLIFF, stitch,as also the thirdneedle from said H. D.EASTMAN.

